Question about JBL PB12 Subwoofer
I listen to classical music that tends to have a very wide dynamic range. At lower volume levels this amp turns off, or even worse, flickers on/off very rapidly. Just turning the music up is not possable unless I want my house to rumble to the DJ's voice after the piece is over. Is there a way to disable this standby? Or better yet, is there a way to lower the threshold or extend the time before it goes to standby? Like 5-10 minutes after threshold is met, unless it is again exceeded. Like a how a screensaver works on a PC. Great sounding system, have had it for about 6 years. Thanks for any solutions. And a shaking of the fist for any bad news. :P
Capacitor C42 is bad. You should have a 15 minute pause before going back into mute mode. If the cap. is really bad it will distort the sound and cause cutoff.
Posted on Feb 12, 2009
It sounds like there are failing parts in the amp and possibly in the power supply sections. You should contact JBL to find out their service rep in your area.
This unit will not be cheap to service. But, you can start by investigating to know where you are going with it.
Posted on Apr 28, 2008
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